Channel selecting circuit,申请号US19420465573-传众专利搜索

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发明名称	Channel selecting circuit
摘要
申请公布号	US2348626(A)	申请公布日期	1944.05.09
申请号	US19420465573	申请日期	1942.11.14
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	HOLDEN WILLIAM H. T.
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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